---
title: "CVE-2018-0202\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-0202?format=md
keywords: index, follow
---

# CVE-2018-0202

Publication date 6 March 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2018-0202?format=md#impact-score)

Toggle side navigation

## Description

clamscan in ClamAV before 0.99.4 contains a vulnerability that could allow
an unauthenticated, remote attacker to cause a denial of service (DoS)
condition on an affected device. The vulnerability is due to improper input
validation checking mechanisms when handling Portable Document Format
(.pdf) files sent to an affected device. An unauthenticated, remote
attacker could exploit this vulnerability by sending a crafted .pdf file to
an affected device. This action could cause an out-of-bounds read when
ClamAV scans the malicious file, allowing the attacker to cause a DoS
condition. This concerns pdf\_parse\_array and pdf\_parse\_string in
libclamav/pdfng.c. Cisco Bug IDs: CSCvh91380, CSCvh91400.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| clamav | 17.10 artful | Fixed 0.99.4+addedllvm-0ubuntu0.17.10.1 |
| 16.04 LTS xenial | Fixed 0.99.4+addedllvm-0ubuntu0.16.04.1 |
| 14.04 LTS trusty | Fixed 0.99.4+addedllvm-0ubuntu0.14.04.1 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2018-0202?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| clamav | * Upstream:   [87aaa10](https://github.com/Cisco-Talos/clamav-devel/commit/87aaa10b29476958f5bf54b6119a133069f944fc) * Upstream:   [700ed96](https://github.com/Cisco-Talos/clamav-devel/commit/700ed96af56077cb1a9bff7b91d21db112f6465d) * Upstream:   [0df2fed](https://github.com/Cisco-Talos/clamav-devel/commit/0df2fedf2805e574512c486b32a0fff4ed394560) * Upstream:   [495fce9](https://github.com/Cisco-Talos/clamav-devel/commit/495fce917445063d519f14b0009cee025f817bc3) * Upstream:   [99eadf7](https://github.com/Cisco-Talos/clamav-devel/commit/99eadf7a9ad351210165312362d1f32b77c6f857) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.5 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0202)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-0202)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-0202)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-0202)

### Related Ubuntu Security Notices (USN)

+ [USN-3592-1](https://usn.ubuntu.com/USN-3592-1)
+ ClamAV vulnerabilities
+ 8 March 2018

+ [USN-3592-2](https://usn.ubuntu.com/USN-3592-2)
+ ClamAV vulnerabilities
+ 8 March 2018

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2018-0202>